I just thought I touch base with a few Christmas themed science ideas I came across;
1. How long does a candy cane take to dissolve in various liquids?
2. Engineering with lollies ; http://www.ehow.com/ehow-mom/blog/help-kids-build-some-sweet-math-skills/
as an extra challenge give a limited number of toothpicks and lollies and ask students to make the tallest tower. measure in millimetres to be accurate, tabulate results.
3. Candy cane shaped crystals http://littlebinsforlittlehands.com/christmas-crystal-candy-canes-science-activity/
or 4. snow flakes https://www.youtube.com/watch?v=PlYL4_cgCTU
5. make fake snow https://www.youtube.com/watch?v=pM2OQzl4gnM (its the same chemical as in a nappy)